I've been to Branson a few times over my life time, but each time was spent in a condominium or house resort place or elaborated motel type place. And this is my take on....
Get the cheapest campsite you can find. If you are truly visiting Branson for all the activities there, you won't be spending any time at the campground anyway. Chances are, you'll be out late watching shows or engaged in activities, and you'll sleep in long in the morning, get up, and hit the streets again.
If you are selecting a campground so you can just vegetate around a campfire, you can do that somewhere much cheaper than the Bronson area. Or consider Table Rock State Park. Table Rock State Park would be my choice and none other.